If a1=6 an= an-1-4 then find the value of a4

Brook states that the distance on the line is 4 units. caleb states that the whole line does not have a distance because it continues on forever. vivian states that the line is 6 units long. which distance did brook measure? which distance did vivian measure?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Which value of y will make the inequality y< -1 false?